Abubuwa da yawa Dole ne ku sani Game da Cyanidation na Zinariya

Cyanidation na zinari hanya ce ta hako zinare ta amfani da ita cyanide a matsayin wakili na leaching. Saboda balagagge matakin fasaha, yawan leaching, da ƙarfi mai ƙarfi ga ma'adinai, hanyar cyanidation ta kasance ɗayan manyan hanyoyin hakar zinare a halin yanzu. A cikin Zinariya cyanidation tsari, dole ne a sarrafa kowane mataki don tabbatar da fa'idodin tattalin arziki mai kyau yayin rage nauyin kayan aiki da zuba jari.

1. Aeration da Cyanide Addition

Bayan an niƙa, ana ƙara cyanide a cikin ɓangaren litattafan almara don narkar da zinari da samar da rukunin ƙarfe. Tsarin amsawa shine kamar haka: 4Au + 8NaCN + O2 + 2H2O → 4NaAu(CN) 2 + 4NaOH. Kamar yadda ake iya gani daga dabarar da ke sama, ana buƙatar iskar oxygen a cikin aikin leaching zinariya. Don haka, a cikin samar da masana'antu, ana buƙatar tankin leaching. Matsin iska gabaɗaya kusan kilogiram 1 ne, kuma ƙarar iska a cikin minti ɗaya don kowane mitar mai cubic na slurry ya fi 0.002 m³.

2. Kara Kariya Alkali

Don tabbatar da tattarawar cyanide a cikin ɓangaren litattafan almara, guje wa gurɓataccen muhalli, da hana haɓakar iskar hydrogen cyanide (HCN) mai guba, dole ne a ƙara alkali a cikin tankin leaching don kula da ƙimar pH mai girma na ɓangaren litattafan almara. Ana amfani da madarar lemun tsami ko lemun tsami sau da yawa wajen samar da masana'antu, kuma wani lokacin ana ƙara NaOH don ƙarin daidaitawa.

3. Kiyaye Dakatarwar Sulurry

Tsarin cyanidation na zinari yana da wasu buƙatu don aikin tankin tashin hankali na leaching. Tare da ƙarancin wutar lantarki, barbashi na monomer-rabu ko fallasa zinare a cikin ɓangaren litattafan almara bai kamata su saka a cikin tanki ba. Ya kamata a haɗa ɓangaren litattafan almara, cyanide, lemun tsami, da iska a cikin tanki don isa wurin da aka dakatar. A slurry maida hankali a cikin kowane bangare na tanki ya kamata m, kuma babu wani stratification tare da zurfin shugabanci na tanki, da barbashi size rarraba ya zama uniform.

4. Kula da Mahimmancin Mahimmanci

Lokacin da yawa na zinariya tama ne 2.65 - 2.8. Matsakaicin ƙwayar ƙwayar ƙwayar cuta ta gaba ɗaya shine 40-45%. Lokacin da yawa na flotation maida hankali ne 3 - 3.5. Matsakaicin yawan leaching shine 30-40%. Gabaɗaya, kayan da ke da tarar ƙasa da raga 200 suna lissafin 80 - 95%.

5. Rage sawa da hayaniyar sassa masu motsi

Don rage lalacewa na agitator da kuma ƙara yawan rayuwar sabis, mafi yawan masu tasowa a cikin samar da masana'antu suna da layi na roba. Zaɓin na'urar watsawa ya kamata ya kasance mai hankali don tabbatar da ingantaccen watsawa da ƙaramar amo.

6. Rage Ciwon Carbon

The CarbonHanyar da ke cikin pulp tana ƙara carbon a cikin tankin shaƙa don ɗaukar zinare. Idan ƙarfin tayar da hankali na tankin shaƙa ya yi ƙarfi sosai, za a niƙa carbon ɗin kuma a ɓace. Idan ƙarfin tayar da hankali ya yi rauni, za a samar da laka. Saboda haka, yayin da ake riƙe ɓangaren litattafan a cikin yanayin da aka dakatar, a gefe guda, ya zama dole a zaɓi babban carbon don samarwa, kuma a gefe guda, ya zama dole a rage saurin juyawa na impeller don rage asarar ɓangaren litattafan, carbon, da ƙarfin shigarwa na tankin shaƙawar tayar da hankali.

7. Ƙayyade Ƙarfin Da Ya dace

A halin yanzu, ƙarfin sarrafa tsire-tsire na cyanidation na zinari na gama gari ya bambanta daga dubun-dubatar tan zuwa dubun-dubatar tan a kowace rana. Mafi girman ƙarfin samarwa, girman yankin shuka, kuma mafi girman ƙayyadaddun kayan aiki da saka hannun jari. Dole ne kowane mai ma'adinan ma'adinai ya ƙayyade ƙarfin sarrafa masana'anta daidai da ainihin halin da ake ciki.

8. Rage Nauyin Kayan aiki da Zuba Jari

Lokacin zabar tankin leaching, a gefe guda, ana buƙatar tsarin leaching don zama mai inganci da adana makamashi, kuma a lokaci guda, ana buƙatar na'urar watsawa don samun ƙaramin sawun ƙafa da nauyi. Lokacin da aka ƙayyade iya aiki, ƙaddamarwar ɓangaren litattafan almara, da lokacin leaching, ana iya ƙayyade adadin tankunan leaching. Koyaya, ƙayyadaddun tankunan leaching ya kamata su dace da ƙarfin shuka. A lokacin da gina wani 500t/d zinariya cyanidation shuka, idan an yi amfani da φ3.5X3.5m leaching tanki, da ake bukata kayan aiki da ake bukata don ƙara da zuba jari. Sabili da haka, kawai tare da kayan aiki mai haske da ƙarfin da ya dace za a iya rage yawan zuba jari na ginin.